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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 01 Jan 2009 (Thursday) 06:01
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New 5D2 - Faulty sensor? Help please!

 
Surfrider77
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Jan 01, 2009 06:01 |  #1

Hello everyone. I am new to the forum here, but have been pouring over posts to get some better knowledge of my new hobby. I recently bought a new 5D2 and I am in a bit of a panic thinking I may have a faulty sensor. There are some pixels that consistently come up red, particularly when the subject color is dark... most noticeably black.

I took some shots of some friends getting ready for a New Year party last night and reviewing them this morning it was very clear there is a problem. It is not only from last night, but going back looking at previous photos in the week its faulty at the same location every time (including different lenses). I am only viewing these with Windows Photo Gallery for now, but they are in the same location using Paint as well.

Can anyone please give some advice? Did I get a faulty sensor? I am a bit worried because I had this shipped overseas to my military address and have no local shop for help.

I appreciate any input!

(Fullsize JPEGS below)

http://img.photobucket​.com …137/Supraguy/IM​G_0055.jpg (external link)

http://img.photobucket​.com …137/Supraguy/IM​G_0010.jpg (external link)


Canon 5D MarkIII
24-70mm f/2.8L II | 70-200mm f/2.8L IS II | [COLOR=black]100-400mm f/4.5-5.6L IS | [COLOR=black]EF 100mm f/2.8L Macro IS | EF 50mm f/1.4

  
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manipula
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Jan 01, 2009 06:06 |  #2

I looked at one of the pictures at the pixel you circled, and it's normal. Every digital camera I've ever personally used has done the same. Dead pixels is the term used I think, and there is a way of mapping them out, to do with exposures with the lens cap or something. My 5D has them all over the place, and I'm bothered enough about it, I've never actually gotten round to learning about this 'mapping them out' thing...


Cheers, Dave.
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Nikolas
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Jan 01, 2009 06:07 |  #3

Hot pixels not an issue at all and they can be fixed do a search on this forum or someone will post the fix which involved the body cap and the sensor clean open for an amount of time, all sensors have these issues.


Canon 5D2 20D & 300D 50mm f1.8 mk 2, 24-105 f4 IS L
Tokina 12-24 f4
ATX PRO, 400mm f5.6 ATX apo
Sigma 28-70mm f2.8
EX DG, 120-300mm f2.8 EX DG
Tamron SP pro TC 1.4 and KENKO 2x teleplus pro 300DG and lots of m42 lenses

  
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Mark
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Jan 01, 2009 06:09 |  #4

My 1d3 has a whole bunch of them, when I open the files in LR they all disappear instantly, so I don't care! :)


Mark

  
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Surfrider77
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Jan 01, 2009 06:43 |  #5

pendulum15 wrote in post #6981621 (external link)
My 1d3 has a whole bunch of them, when I open the files in LR they all disappear instantly, so I don't care! :)

I did pick up a copy of LR2 which I havent installed yet.

Is this something you need to configure or will it be done automatically?

-Thanks to everyone else for the quick replies!!-


Canon 5D MarkIII
24-70mm f/2.8L II | 70-200mm f/2.8L IS II | [COLOR=black]100-400mm f/4.5-5.6L IS | [COLOR=black]EF 100mm f/2.8L Macro IS | EF 50mm f/1.4

  
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Nikolas
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Jan 01, 2009 06:46 |  #6

Surfrider77 wrote in post #6981676 (external link)
I did pick up a copy of LR2 which I havent installed yet.

Is this something you need to configure or will it be done automatically?

-Thanks to everyone else for the quick replies!!-


Automatically, enjoy your camera and don't be bothered by those pesky hot pixels.


Canon 5D2 20D & 300D 50mm f1.8 mk 2, 24-105 f4 IS L
Tokina 12-24 f4
ATX PRO, 400mm f5.6 ATX apo
Sigma 28-70mm f2.8
EX DG, 120-300mm f2.8 EX DG
Tamron SP pro TC 1.4 and KENKO 2x teleplus pro 300DG and lots of m42 lenses

  
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Mark
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Jan 01, 2009 07:02 |  #7

Nikolas wrote in post #6981680 (external link)
Automatically, enjoy your camera and don't be bothered by those pesky hot pixels.

Yep, Only way I can see them is if my computer is being slow for the day or if I zoom way in with live view, photoshop and lightroom (pretty much the only apps I use for raw conversion) get rid of them before you can even see them :D


Mark

  
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Surfrider77
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Jan 01, 2009 13:54 |  #8

Ok, I have LR2 installed. I have imported the photos, but the "hot pixels" are unchanged. Is there a processing command I need to execute for them to magically disappear as the last two posters suggest?

Thanks again for helping out a noob. :D


Canon 5D MarkIII
24-70mm f/2.8L II | 70-200mm f/2.8L IS II | [COLOR=black]100-400mm f/4.5-5.6L IS | [COLOR=black]EF 100mm f/2.8L Macro IS | EF 50mm f/1.4

  
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iof
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Jan 01, 2009 14:25 |  #9

See post #2 in this thread: https://photography-on-the.net …&highlight=map+​hot+pixels


Ron.
5D,20D, D60, Elan 7, Canon stuff from the 70's, Pentax stuff from the 60's, other stuff.

  
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Surfrider77
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Jan 01, 2009 15:52 |  #10

I did the manual sensor cleaning with cap, as suggested and have snapped about half a dozen shots trying to recreate the problem and it would seem its been resolved.

Many thanks everyone!!


Canon 5D MarkIII
24-70mm f/2.8L II | 70-200mm f/2.8L IS II | [COLOR=black]100-400mm f/4.5-5.6L IS | [COLOR=black]EF 100mm f/2.8L Macro IS | EF 50mm f/1.4

  
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tonylong
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Jan 01, 2009 16:08 |  #11

Surfrider77 wrote in post #6983781 (external link)
I did the manual sensor cleaning with cap, as suggested and have snapped about half a dozen shots trying to recreate the problem and it would seem its been resolved.

Many thanks everyone!!

Cool! It's one of those "secrets" that may be a Canon factory "fix" but they never told us about except "through the grapevine".

Glad it worked for you!


Tony
Two Canon cameras (5DC, 30D), three Canon lenses (24-105, 100-400, 100mm macro)
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iof
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Jan 01, 2009 17:58 |  #12

It took me awhile to find the link, but you might also want to try out this: http://www.starzen.com​/imaging/deadpixeltest​.htm (external link)

Instructions on using the test are unzipped with the utility. Hot pixels happen, but the following conditions will contribute to the number found: High ISO, long shutter speeds, and high temperatures.


Ron.
5D,20D, D60, Elan 7, Canon stuff from the 70's, Pentax stuff from the 60's, other stuff.

  
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silvias13
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Jan 02, 2009 09:57 as a reply to  @ iof's post |  #13

Hey Surfrider77, have you tried shooting any videos and seeing if the red dot still shows in your movies? I've made a thread about the same issue as you.

https://photography-on-the.net/forum/showthre​ad.php?t=623284


flickr (external link) | 500px (external link)

  
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